Installer.php 6.9 KB
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<?php
/**
 * @link http://www.yiiframework.com/
 * @copyright Copyright (c) 2008 Yii Software LLC
 * @license http://www.yiiframework.com/license/
 */

namespace yii\composer;

use Composer\Package\PackageInterface;
use Composer\Installer\LibraryInstaller;
use Composer\Repository\InstalledRepositoryInterface;
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use Composer\Script\CommandEvent;
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use Composer\Util\Filesystem;
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/**
 * @author Qiang Xue <qiang.xue@gmail.com>
 * @since 2.0
 */
class Installer extends LibraryInstaller
{
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	const EXTRA_BOOTSTRAP = 'bootstrap';
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	const EXTRA_WRITABLE = 'writable';
	const EXTRA_EXECUTABLE = 'executable';
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	const EXTENSION_FILE = 'yiisoft/extensions.php';

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	/**
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	 * @inheritdoc
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	 */
	public function supports($packageType)
	{
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		return $packageType === 'yii2-extension';
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	}

	/**
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	 * @inheritdoc
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	 */
	public function install(InstalledRepositoryInterface $repo, PackageInterface $package)
	{
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		// install the package the normal composer way
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		parent::install($repo, $package);
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		// add the package to yiisoft/extensions.php
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		$this->addPackage($package);
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		// ensure the yii2-dev package also provides Yii.php in the same place as yii2 does
		if ($package->getName() == 'yiisoft/yii2-dev') {
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			$this->linkBaseYiiFiles();
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		}
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	}

	/**
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	 * @inheritdoc
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	 */
	public function update(InstalledRepositoryInterface $repo, PackageInterface $initial, PackageInterface $target)
	{
		parent::update($repo, $initial, $target);
		$this->removePackage($initial);
		$this->addPackage($target);
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		// ensure the yii2-dev package also provides Yii.php in the same place as yii2 does
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		if ($initial->getName() == 'yiisoft/yii2-dev') {
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			$this->linkBaseYiiFiles();
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		}
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	}

	/**
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	 * @inheritdoc
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	 */
	public function uninstall(InstalledRepositoryInterface $repo, PackageInterface $package)
	{
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		// uninstall the package the normal composer way
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		parent::uninstall($repo, $package);
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		// remove the package from yiisoft/extensions.php
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		$this->removePackage($package);
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		// remove links for Yii.php
		if ($package->getName() == 'yiisoft/yii2-dev') {
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			$this->removeBaseYiiFiles();
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		}
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	}

	protected function addPackage(PackageInterface $package)
	{
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		$extension = [
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			'name' => $package->getName(),
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			'version' => $package->getVersion(),
		];
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		$alias = $this->generateDefaultAlias($package);
		if (!empty($alias)) {
			$extension['alias'] = $alias;
		}
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		$extra = $package->getExtra();
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		if (isset($extra[self::EXTRA_BOOTSTRAP]) && is_string($extra[self::EXTRA_BOOTSTRAP])) {
			$extension['bootstrap'] = $extra[self::EXTRA_BOOTSTRAP];
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		}

		$extensions = $this->loadExtensions();
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		$extensions[$package->getName()] = $extension;
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		$this->saveExtensions($extensions);
	}

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	protected function generateDefaultAlias(PackageInterface $package)
	{
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		$fs = new Filesystem;
		$vendorDir = $fs->normalizePath($this->vendorDir);
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		$autoload = $package->getAutoload();

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		$aliases = [];
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		if (!empty($autoload['psr-0'])) {
			foreach ($autoload['psr-0'] as $name => $path) {
				$name = str_replace('\\', '/', trim($name, '\\'));
				if (!$fs->isAbsolutePath($path)) {
					$path = $this->vendorDir . '/' . $package->getName() . '/' . $path;
				}
				$path = $fs->normalizePath($path);
				if (strpos($path . '/', $vendorDir . '/') === 0) {
					$aliases["@$name"] = '<vendor-dir>' . substr($path, strlen($vendorDir)) . '/' . $name;
				} else {
					$aliases["@$name"] = $path . '/' . $name;
				}
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			}
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		}

		if (!empty($autoload['psr-4'])) {
			foreach ($autoload['psr-4'] as $name => $path) {
				$name = str_replace('\\', '/', trim($name, '\\'));
				if (!$fs->isAbsolutePath($path)) {
					$path = $this->vendorDir . '/' . $package->getName() . '/' . $path;
				}
				$path = $fs->normalizePath($path);
				if (strpos($path . '/', $vendorDir . '/') === 0) {
					$aliases["@$name"] = '<vendor-dir>' . substr($path, strlen($vendorDir));
				} else {
					$aliases["@$name"] = $path;
				}
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			}
		}
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		return $aliases;
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	}

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	protected function removePackage(PackageInterface $package)
	{
		$packages = $this->loadExtensions();
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		unset($packages[$package->getName()]);
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		$this->saveExtensions($packages);
	}

	protected function loadExtensions()
	{
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		$file = $this->vendorDir . '/' . self::EXTENSION_FILE;
		if (!is_file($file)) {
			return [];
		}
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		// invalidate opcache of extensions.php if exists
		if (function_exists('opcache_invalidate')) {
			opcache_invalidate($file, true);
		}
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		$extensions = require($file);

		$vendorDir = str_replace('\\', '/', $this->vendorDir);
		$n = strlen($vendorDir);

		foreach ($extensions as &$extension) {
			if (isset($extension['alias'])) {
				foreach ($extension['alias'] as $alias => $path) {
					$path = str_replace('\\', '/', $path);
					if (strpos($path . '/', $vendorDir . '/') === 0) {
						$extension['alias'][$alias] = '<vendor-dir>' . substr($path, $n);
					}
				}
			}
		}

		return $extensions;
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	}

	protected function saveExtensions(array $extensions)
	{
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		$file = $this->vendorDir . '/' . self::EXTENSION_FILE;
		$array = str_replace("'<vendor-dir>", '$vendorDir . \'', var_export($extensions, true));
		file_put_contents($file, "<?php\n\n\$vendorDir = dirname(__DIR__);\n\nreturn $array;\n");
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		// invalidate opcache of extensions.php if exists
		if (function_exists('opcache_invalidate')) {
			opcache_invalidate($file, true);
		}
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	}
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	protected function linkBaseYiiFiles()
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	{
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		$yiiDir = $this->vendorDir . '/yiisoft/yii2';
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		if (!file_exists($yiiDir)) {
			mkdir($yiiDir, 0777, true);
		}
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		foreach(['Yii.php', 'BaseYii.php', 'classes.php'] as $file) {
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			file_put_contents($yiiDir . '/' . $file, <<<EOF
<?php
/**
* This is a link provided by the yiisoft/yii2-dev package via yii2-composer plugin.
*
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/

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return require(__DIR__ . '/../yii2-dev/framework/$file');
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EOF
			);
		}
	}

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	protected function removeBaseYiiFiles()
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	{
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		$yiiDir = $this->vendorDir . '/yiisoft/yii2';
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		foreach(['Yii.php', 'BaseYii.php', 'classes.php'] as $file) {
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			if (file_exists($yiiDir . '/' . $file)) {
				unlink($yiiDir . '/' . $file);
			}
		}
		if (file_exists($yiiDir)) {
			rmdir($yiiDir);
		}
	}
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	/**
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	 * Sets the correct permission for the files and directories listed in the extra section.
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	 * @param CommandEvent $event
	 */
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	public static function setPermission($event)
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	{
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		$options = array_merge([
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			self::EXTRA_WRITABLE => [],
			self::EXTRA_EXECUTABLE => [],
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		], $event->getComposer()->getPackage()->getExtra());
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		foreach ((array)$options[self::EXTRA_WRITABLE] as $path) {
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			echo "Setting writable: $path ...";
			if (is_dir($path)) {
				chmod($path, 0777);
				echo "done\n";
			} else {
				echo "The directory was not found: " . getcwd() . DIRECTORY_SEPARATOR . $path;
				return;
			}
		}

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		foreach ((array)$options[self::EXTRA_EXECUTABLE] as $path) {
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			echo "Setting executable: $path ...";
			if (is_file($path)) {
				chmod($path, 0755);
				echo "done\n";
			} else {
				echo "\n\tThe file was not found: " . getcwd() . DIRECTORY_SEPARATOR . $path . "\n";
				return;
			}
		}
	}
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}